It looks like there is no way to retrieve the breadcrumbs and include them in a PDF export. This bug report has more information as to why: Allow PDF Exports to be customised via Velocity
I also was not able to find any plugins on the Atlassian Marketplace which include that functionality in their documentation.
Here is our documentation that covers a lot of what is possible for the PDF exports in Cloud:
Hi Community! I’m Elaine, Confluence Product Manager. You may have read my earlier post about page tree in space navigation sidebar. I'm excited to share another improvement that helps you organize ...
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